Stem winding and setting watch



(No Model.)

G. P. JOHNSON.

' STEM WINDING AND SETTING WATCH.

No. 406,513. Patented July 9, 1889b CZ/L/ lT/ViSSES: nvvs/vrog BY wave UNITED STATES PATENT OFFICE.

GEORGE F. JOHNSON, OF AURORA, ILLINOIS.

STEM WINDING AND SETTING WATCH.

SPECIFICATION forming part of Letters Patent No. 406,513, dated July 9, 1889.

Application filed September 12, 1887. $erial No. 249,488. No model.)

To (tZZ whom it may concern:

Be it known thatI, GEORGE F. JOHNSON, a citizen. of the United States, residing at Aurora, in the county of Kane and State of Illinois, have invented certainnew and useful Improvements in StemWVinding and Stem- Setting XVatches, of which the following is a full, clear, and concise description.

This invention relates to that class of stem winding and stem-setting watches in which the setting mechanism is thrown into engagement with the dial-wheels by pulling out the crown-piece and attached stem-key to a dis tance limited by a device within the watchcase. Other devices are used for the ac'conr plishment of this purpose differing in various details of construction, but more essentially in the position which the stem-driven train assumes when the watch-movement is detached from the case. In one class of pendantsetting watches the stem-driven train stands in engagement with the dial-wheels, except when the watch is in the case. In a second class the said train stands in engagement with the winding-arbor. The first arrangement is disadvantageous from the fact that it interferes with the .running of the watch when out of the case. An arrangement for obviating the second objection is shown in Letters Patent to O. P. Corliss, No. 325,506. My device, as hereinafter described, accomplishes the disengagement of the stemdriven train from the dial-wheels when the movement is out of the case, and is an improvement on the devices heretofore used, as it accomplishes the purpose designed without requiring the use of any auxiliary piece.

The construction of my device will be understood by referring to the accompanying drawings, forming part of this specification, in which similar letters indicate corresponding parts in the different figures.

Figure 1 represents a face View of a watclr movement with dial removed, showing the stem winding and setting parts in position for winding as they appear when in a case,

having a crown-piece and attached stem-key (not shown) pushed in to its limit. This is the normal position of the winding and setting parts as the watch is carried in the case. Fig. 2 is a similar View of the face of a watch,

showing stem winding and setting parts, in position for setting as they appear in the case, with the crowirpiece pulled out to its limit. Fig. is a similar view of face of watch, showing the position which the winding and setting parts assume when the watch-movement is out of the case and the parts are free from the limiting an d restraining effect of the stemkey. Fig. i is a reverse view of Fig. 3, and shows, in connection with the other figures, how the movement of the stem-key operates to shift the winding and setting train.

In the drawings, A is the pillar-plate of the watch, upon which the winding and setting mechanism is mounted.

B is a movable yoke adapted to swing concentrically to the spur and bevel geared wheel O. The Wheel G is meshed with a bevel-pinion P, which is actuated by a rotatable and longitudinally movable stem-key with attached crown or finger piece, (not shown,) forming part of the watch-case. This stemkey is limited in its longitudinal movement by an arrangement in common use in the cases adapted to Valtham and Elgin pendantsetting watches. The yoke B carries at opposite ends wheels D and E, one of which D meshes into the ratchet I, connected with the Winding or barrel arbor N, and effects the winding. The other E mesheswith the minute-wheel F, and through it communicates motion to the cannon pinion J and effects the setting.

G is a locking-lever with attached pin 6, extending through an opening in the watchplate A and adapted to receive impulse from the lever 7L, pivoted upon the reverse side of the watch-plate, as shown in Fig. 4C. The lever h is acted upon by a stem-key through the medium of a pin on, sliding longitudinally in a central hole in the bevel-pinion P, Fig. 4C.

The locking-lever G is actuated by a spring K in a direction opposite to the impulse received from lever h. The pressure of the spring when the restraint of the lever IL is removed, by pulling out the stem-key, causes the lever G to swing into contact with the projection 2 of the yoke B, thus throwing it into mesh with the minute-wheel F, (the position shown in Fig. 2,) for setting. lVhen the stem -key is pushed in, the lever 71, acting upon the pin e, pushes the lever G from its engage ment with the yoke 1:), which is then thrown into engagement with the ratchet I, when the parts are in the position (shown in Fig.1) for winding.

Thus far, although my device differs in details of construction from others heretofore made and in use, it is somewhat similar in operation.

My improvement, which I claim, can best be understood by reference to Fig. 3, and consists in so constructing and arranging the parts as to cause or permit the stenrdriven train to assume a neutral position, in which it is neither engaged with dial-wheels or winding-arbor when the watch movement is out of the case. In this device it is effected by making the lever G capable of sutlicient movement, when released from the restraint of the stem-key, to pass beyond the point 2 0t yoke l and rest upon the inclined portion 3 of the same, the movement of the lever G being limited by the pin 0 striking the side of the open in g in the watch-plate, orby other suitable means. The resting portion of lever G and the incline 1-3 are so adjusted to each other as to permit the yoke 13, by the pressure ot' the spring M, to be thrown out of engagement with the dial-wheels without swinging far enough to engage with the ratchet wheel I. This is the normal position of the winding and setting train when the watch is out of the ease. The watch can, however, be

wound or set when out of the case by the use of an ordinary bench-key, giving sulllcient end pressure upon pin an to force the parts into proper position.

I do not wish to be limited to the exact configuration of the point of the lever G and. projection 2 of yoke 13, shown in the drawings, as the reverse arrangement in which the inclines should be upon the locking-lever instead of the yoke and made to act upon a point of the yoke or upon a pin therein would be a practical etpiivalent. Instead of making both inclines upon, eitherpieee one incline could be made upon each.

Having thus described my invention, I claim as new and desi re toseeure by Letters Patent-- As an improvement in stem-winding and stem-setting watches, the lever 72, actuated by the end-thrust of the stem-key, in continuation with the lock-lever G and the swinging yoke ll, said lock-lever and yoke being so formed at the point of their contact as to cause the yoke with its attached wheels to be locked in engagement with the dial-wheels when the lock-lever is restrained in its movements to a certain limit, but will permit the same to be automatically disengaged therefrom when the lock-lever is allowed additional. moven'lent, as when the watch is re moved from the case, all substantially as shown and described.

GliIORGE F. JOHNSON.

\Vitnesses:

N. J. ALDRICH. 

